[TASK] Allow fetching zero resultsPerPage

If just details like the number of rows in the result or
facet-options are of interest, even specifying zero
for the resultsPerPage is "useful".

Change-Id: I18cf6192b8aa3ea678e7b7a7a476c676b88fdf1f
Resolves: #54656
Reviewed-on: https://review.typo3.org/26584
Reviewed-by: Hans Höchtl
Tested-by: Hans Höchtl